Wall lamp



FIG. 1 is a perspective view of a wall lamp comprising the new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational view thereof, a left side elevational view being a mirror image thereof;

FIG. 4 is a top view thereof; and,

FIG. 5 is a bottom view thereof.

The broken lines in the drawings are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for the wall lamp, as shown and described. 